21577270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 24871370

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 79, 110, 130, 143, 158, 191, 286, 382, 395, 715, 790, 869, 955, 1027, 1430, 1738, 1910, 2054, 2101, 2483, 4202, 4345, 4966, 5135, 8690, 10270, 10505, 11297, 12415, 15089, 21010, 22594, 24830, 27313, 30178, 54626, 56485, 75445, 112970, 136565, 150890, 165979, 196157, 273130, 331958, 392314, 829895, 980785, 1659790, 1961570, 2157727, 4315454, 10788635, 21577270]

約数ペア:

[(1, 21577270), (2, 10788635), (5, 4315454), (10, 2157727), (11, 1961570), (13, 1659790), (22, 980785), (26, 829895), (55, 392314), (65, 331958), (79, 273130), (110, 196157), (130, 165979), (143, 150890), (158, 136565), (191, 112970), (286, 75445), (382, 56485), (395, 54626), (715, 30178), (790, 27313), (869, 24830), (955, 22594), (1027, 21010), (1430, 15089), (1738, 12415), (1910, 11297), (2054, 10505), (2101, 10270), (2483, 8690), (4202, 5135), (4345, 4966)]